PT anti-harmonic protection device

Abstract

The utility model discloses a PT anti-harmonic protection device which comprises three harmonic eliminator bodies arranged in an inner cavity of a box body, the inner cavity of the box body is fixedly connected with a mounting frame, the top of the mounting frame is fixedly connected with three pairs of same limiting sleeves, the bottom of each harmonic eliminator body is fixedly connected with a mounting plate, and the mounting plate is fixedly connected with a power supply. And first sliding grooves are formed in the front face and the back face of the mounting plate correspondingly, inner cavities of the first sliding grooves are slidably connected with clamping plates, and the clamping plates are clamped with the limiting sleeves. The resonance eliminator body is placed at the top of the mounting frame, the shifting block is pressed to enable the clamping plate to enter the inner cavity of the first sliding groove, at the moment, the spring shrinks, when the mounting plate reaches a proper position, the shifting block is loosened to enable the spring to stretch, and the clamping plate is clamped with the limiting sleeve, so that the resonance eliminator is fixed. Therefore, the purposes that the resonance eliminator can be quickly disassembled and assembled through the fixing structure, it is avoided that much time needs to be consumed for disassembling and assembling the resonance eliminator, and the disassembling and assembling efficiency of the resonance eliminator is improved are achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of PT anti-harmonic protection, in particular to a PT anti-harmonic protection device. Background Art

[0002] The tuner is a damping device that protects the primary side of the voltage transformer and is used to eliminate the resonance of the voltage transformer in the power grid. Since it can limit the low-frequency saturation current flowing through the PT, it can also prevent the PT high-voltage fuse from frequently blowing. Its essence is a high-capacity nonlinear resistor that plays a damping and current-limiting role, and can effectively limit the ferromagnetic resonance of the voltage transformer. The tuner is mostly installed by bolts. The tuner is installed on the mounting bracket inside the tuner box through bolts to enable the tuner to perform anti-harmonic protection.

[0003] At present, most harmonic eliminators are installed on the mounting frame inside the harmonic eliminator box by bolts. After the harmonic eliminator has been used for a period of time, it may need to be disassembled and replaced. The internal structure of some harmonic eliminator boxes is relatively complex, which is not convenient for disassembly and assembly of the harmonic eliminator. Therefore, a PT anti-harmonic protection device is required. The harmonic eliminator can be quickly disassembled and assembled through the fixed structure, avoiding the need to spend a lot of time on the disassembly and assembly of the harmonic eliminator, thereby improving the efficiency of the disassembly and assembly of the harmonic eliminator. Utility Model Content

[0004] The purpose of the utility model is to provide a PT anti-harmonic protection device, which can quickly disassemble and assemble the harmonic eliminator through a fixed structure, avoiding the need to consume a lot of time for disassembling and assembling the harmonic eliminator, and improving the efficiency of disassembling and assembling the harmonic eliminator, so as to solve the above-mentioned background technical problems.

[0005] The camshaft is connected to the top of the camshaft, and the camshaft is connected to the top of the camshaft, and the camshaft is connected to the top of the camshaft.

[0006] Preferably, the surface of the harmonic eliminator body is provided with three fixing sleeves of the same diameter, the top of the harmonic eliminator body is provided with a connector, and the surface of the connector is threadedly connected with a nut.

[0007] Preferably, four symmetrical support frames are provided on the surface of the harmonic elimination device body, the support frames are fixedly connected to the fixing sleeve, and the support frames are L-shaped.

[0008] Preferably, two symmetrical connecting pieces are welded to the front and back of the mounting frame, and bolts are provided through the surfaces of the connecting pieces, and the bolts are threadedly connected to the inner wall of the box.

[0009] Preferably, the mounting frame is rectangular, a rectangular groove is provided at the bottom of the eliminator body, the mounting plate is adapted to the rectangular groove at the bottom of the eliminator body, and the bottom of the eliminator body is fitted to the top of the mounting frame.

[0010] The beneficial effects of the utility model are:

[0011] 1. The utility model places the harmonic eliminator body on the top of the mounting frame, presses the dial block, and makes the card plate enter the inner cavity of the slide groove. At this time, the spring will contract. When the mounting plate reaches the appropriate position, the dial block is released to stretch the spring, so that the card plate and the limit sleeve are engaged. The harmonic eliminator can be quickly disassembled and assembled through the fixed structure, avoiding the need to consume a lot of time for disassembly and assembly of the harmonic eliminator, thereby improving the purpose of disassembly and assembly efficiency of the harmonic eliminator.

[0012] 2. The utility model provides a support frame. When the eliminator body is temporarily placed, the support frame increases the stability of the eliminator body when it is placed vertically, thereby preventing the eliminator body from tipping over when placed on the ground or a table, and ensuring the stability of the eliminator body when it is placed vertically. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] in:

[0014] Figure 1 This is a three-dimensional schematic diagram of an embodiment of the utility model;

[0015] Figure 2 This is a three-dimensional schematic diagram of a fixing structure of an embodiment of the utility model;

[0016] Figure 3 This is a three-dimensional disassembled schematic diagram of a fixing structure of an embodiment of the utility model;

[0017] Figure 4 This is an embodiment of the utility model Figure 3 A partial enlarged view of point A.

[0018] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0019] 1. Box body, 2. Harmonic elimination device body, 3. Mounting frame, 4. Limit sleeve, 5. Mounting plate, 6. Slide groove 1, 7. Clamping plate, 8. Shift block, 9. Slide groove 2, 10. Limit rod, 11. Limit groove, 12. Spring, 13. Fixing sleeve, 14. Connector, 15. Support frame. DETAILED DESCRIPTION

[0020] Hereinafter, embodiments of the PT anti-harmonic protection device of the present invention will be described with reference to the accompanying drawings.

[0021] Example 1:

[0022] Figure 1-4 A PT anti-harmonic protection device according to an embodiment of the present invention is shown, which includes three eliminator bodies 2 arranged in the inner cavity of a box body 1. The surface of the eliminator body 2 is provided with three fixing sleeves 13 of the same diameter. A connector 14 is provided on the top of the eliminator body 2. A nut is threadedly connected to the surface of the connector 14. Four symmetrical support frames 15 are provided on the surface of the eliminator body 2. The support frames 15 are fixedly connected to the fixing sleeves 13. The support frames 15 are L-shaped. Through the setting of the support frames 15, when the eliminator body 2 is temporarily placed, the support frames 15 will increase the stability of the eliminator body 2 when it is placed vertically, thereby preventing the eliminator body 2 from tipping over when placed on the ground or on a table, thereby ensuring the stability of the eliminator body 2 when it is placed vertically. The inner cavity of the box body 1 is fixedly connected with a mounting frame 3. Three pairs of identical limit sleeves 4 are fixedly connected to the top of the mounting frame 3, and a mounting plate 5 is fixedly connected to the bottom of the harmonic elimination body 2. A slide groove 6 is provided on the front and back of the mounting plate 5. A card plate 7 is slidably connected to the inner cavity of the slide groove 6. The card plate 7 is engaged with the limit sleeve 4. A shift block 8 is fixedly connected to the top of the card plate 7. Two symmetrical slide grooves 2 9 are provided on the top of the mounting plate 5. The shift block 8 passes through the slide groove 2 9 to the outside of the slide groove 1 6. The side of the inner cavity of the slide groove 1 6 away from the card plate 7 is fixedly connected to the limit rod 10. A limit groove 11 is provided on the side of the card plate 7 close to the limit rod 10. The limit rod 10 slides in the inner cavity of the limit groove 11. A spring 12 is provided on the surface of the limit rod 10. One end of the spring 12 is welded to the card plate 7, and the other end of the spring 12 is welded to the inner wall of the slide groove 1 6.

[0023] Example 2:

[0024] Figure 1-4A PT anti-harmonic protection device according to an embodiment of the present invention is shown, which includes three eliminator bodies 2 arranged in the inner cavity of a box body 1. The inner cavity of the box body 1 is fixedly connected to a mounting bracket 3. Two symmetrical connectors are welded to the front and back of the mounting bracket 3. Bolts are provided on the surface of the connectors. The bolts are threadedly connected to the inner wall of the box body 1. The mounting bracket 3 is rectangular. A rectangular groove is provided at the bottom of the eliminator body 2. The mounting plate 5 is adapted to the rectangular groove at the bottom of the eliminator body 2. The bottom of the eliminator body 2 fits with the top of the mounting bracket 3. Three pairs of identical limit sleeves 4 are fixedly connected to the top of the mounting bracket 3. The bottom of the eliminator body 2 is fixedly connected to the mounting plate 5. The front and back sides of the mounting plate 5 are both provided with a slide groove 6. The inner cavity of the slide groove 6 is slidably connected with a card plate 7. The card plate 7 is engaged with the limit sleeve 4. The top of the card plate 7 is fixedly connected with a shift block 8. The top of the mounting plate 5 is provided with two symmetrical slide grooves 2 9. The shift block 8 passes through the slide groove 2 9 to the outside of the slide groove 1 6. The side of the inner cavity of the slide groove 1 6 away from the card plate 7 is fixedly connected to the limit rod 10. The side of the card plate 7 close to the limit rod 10 is provided with a limit groove 11. The limit rod 10 slides in the inner cavity of the limit groove 11. The surface of the limit rod 10 is sleeved with a spring 12. One end of the spring 12 is welded to the card plate 7, and the other end of the spring 12 is welded to the inner wall of the slide groove 1 6.

[0025] Working principle: When the present invention is used, the user places the tuner body 2 on the top of the mounting bracket 3, and toggles the dial block 8 to make the card plate 7 enter the inner cavity of the slide groove 6. At this time, the card plate 7 will squeeze the spring 12 to make the spring 12 contract. At this time, the mounting plate 5 is placed at a suitable position on the top of the mounting bracket 3, and the dial block 8 is released to make the spring 12 stretch. At this time, the spring 12 will push the card plate 7 out of the inner cavity of the slide groove 6, so that the card plate 7 is engaged with the limit sleeve 4, fixing the tuner body 2, avoiding the time required for disassembly and assembly of the tuner body 2, and improving the efficiency of disassembly and assembly of the tuner. When the tuner body 2 is temporarily placed, the support frame 15 will increase the stability of the tuner body 2 when it is placed vertically, avoiding the tuner body 2 from tipping over when placed on the ground or on a table, and ensuring the stability of the tuner body 2 when it is placed vertically.

[0026] In summary, the PT anti-harmonic protection device places the harmonic eliminator body 2 on the top of the mounting frame 3, presses the shift block 8, and makes the card plate 7 enter the inner cavity of the slide groove 6. At this time, the spring 12 will contract. When the mounting plate 5 reaches the appropriate position, the shift block 8 is released to stretch the spring 12, so that the card plate 7 is engaged with the limit sleeve 4. The purpose of quickly disassembling and assembling the harmonic eliminator through the fixed structure can be achieved, avoiding the need to consume more time for disassembling and assembling the harmonic eliminator, and improving the disassembly and assembly efficiency of the harmonic eliminator.

Claims

1. PT anti-harmonic protection device, characterized in that: The invention comprises three harmonic elimination bodies (2) arranged in the inner cavity of a box (1): the inner cavity of the box (1) is fixedly connected with a mounting frame (3), the top of the mounting frame (3) is fixedly connected with three pairs of identical limiting sleeves (4), the bottom of the harmonic elimination body (2) is fixedly connected with a mounting plate (5), the front and back of the mounting plate (5) are both provided with a slide groove (6), the inner cavity of the slide groove (6) is slidably connected with a card plate (7), the card plate (7) is engaged with the limiting sleeve (4), the top of the card plate (7) is fixedly connected with a shift block (8), the top of the mounting plate (5) is fixedly connected with a mounting plate (5), and the top of the mounting plate (5) is fixedly connected with a mounting plate (5). The part is provided with two symmetrical slide grooves (9), the shift block (8) passes through the slide groove (9) to the outside of the slide groove (6), the inner cavity of the slide groove (6) is fixedly connected to the limiting rod (10) on the side away from the card plate (7), and the card plate (7) is provided with a limiting groove (11) on the side close to the limiting rod (10), and the limiting rod (10) slides in the inner cavity of the limiting groove (11). The surface of the limiting rod (10) is provided with a spring (12), one end of the spring (12) is welded to the card plate (7), and the other end of the spring (12) is welded to the inner wall of the slide groove (6).

2. The PT anti-harmonic protection device according to claim 1, characterized in that: The surface of the harmonic eliminator body (2) is provided with three fixing sleeves (13) of the same diameter, the top of the harmonic eliminator body (2) is provided with a connector (14), and the surface of the connector (14) is threadedly connected with a nut.

3. The PT anti-harmonic protection device according to claim 2, characterized in that: Four symmetrical support frames (15) are provided on the surface of the harmonic elimination device body (2); the support frames (15) are fixedly connected to the fixing sleeve (13); and the support frames (15) are L-shaped.

4. The PT anti-harmonic protection device according to claim 3, characterized in that: Two symmetrical connecting pieces are welded to the front and back of the mounting frame (3), and bolts are provided through the surfaces of the connecting pieces, and the bolts are threadedly connected to the inner wall of the box body (1).

5. The PT anti-harmonic protection device according to claim 4, characterized in that: The mounting frame (3) is rectangular, a rectangular groove is provided at the bottom of the harmonic eliminator body (2), the mounting plate (5) is adapted to the rectangular groove at the bottom of the harmonic eliminator body (2), and the bottom of the harmonic eliminator body (2) is fitted to the top of the mounting frame (3).

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